Tire removing device



March 28, 1944. L LAR QN 2,345346 TIRE REMOVVING DEVICE I Filed July 24, 1941 2 Sheets-Sheet l March 28, 1944. L, LARSON 2,345,346

TIRE REMOVING DEVICE Filed July 24, 1941 2 Sheets-Sheet 2 /0 2' /0 I gall-j.-- 51:11:: +6. 7 6 Z6 r 3 32 i c 3 W )3 46 m! ,e// Lawrence Larson r ieiiiea Mensa, 1944 I UNITED STATES PATENT OFFICE i 2.34am

TIRE REMOVING DEVICE Lawrence Larson. La Crosse, Wis; assignor to mfidfzsmlznfiiamih Application July as, 1941, Serial No. mm

. 1 Claim. (Cl. 1574) This invention relates to a device for removing tires, and it is a particular object of the invention to provide a device ot this kind to facilitate removing truck and bus tires and side and look I ringsfand more particularly when said parts are held tight to the wheeliri'm due to rust or when the rubber within the beads 01 a tire adheres to the rim from heat generated while the wheel is in service or heat-generated from the brakes.

In the servicing of trucks and buses it is often 'i'ound that the rubber of the tires, together with the rust on the rims, form welts on the rim,

resulting in an increased rim circle from which,

in many instances, it is very diiilcult and often impossible to-force oil the tireby'the useof the conventional heavy hammers and tire irons,

It isanother'obiect oi the invention to provide a device to facilitate, the removal of a tire I under such adverse conditions.

It is also an object oi the invention to provide a device 0! this. kind which can be employed 7 in the removal of a tire and lock ring in a manner avoiding distortion of the lock ring which would result in improper fitting oi the ring to the rim when reapplied.

A still further object o! the invention is to provideo. device 01, this kind which can be conveniently employed in-the removal or a tire in a manner whereby is substantially eliminated the liability of materially damaging a head or the tire, such as oiten'occurs with the use ola tire iron or the conventional heavy hammer.

" of the drawings, and the outer or free extremity 01 the head plate 5 is formed to provide an out- The invention consists in the details of con I struction and in the combination and arrangement oi the several p rts oi my improved, tire removing device whereby-certain important advantages are attained, as will be hereinafter more iully set'iorth.

In. order that, my invention may the better l 'lmderstood. I will now proceed to describe the same with reference to the accompanying draws ings, wherein- I y Figure 1 is a view in top plan oi a tireremove ing device constructed in accordance with a Y embodiment of my invention, the wheel rim and associated the being, in initial position; thereon;

Figure 5 is a fragmentary view in vertical section and somewhat similar to Figure. 4, with oer-- tain or the parts in a' second position;

Figure 6 is a fragmentary view in'top'plan of an embodiment 0:.the invention comprising an adjustable guide to fit withindiflerent size hubs;

ets 2. These brackets I are equi-distantly spaced aroimd the base member I and each of such brackets includes the outstanding spaced arms a. between which is pivotally held, by e 'pin 3 or thelike, an end portion 01' a the hook T. As

herein disclosed, this tire hook T is of T-iormation from substantially one end to the other, ex

hook extends slightly beyond th -adjacent end of the head plate 5. The outer end portion of the hook member T is formed to readily engage over a tire carcass C, as illustrated in Figures 4 and 5 wardly and angularly disposed penetrating memher 0 which is adapted to be inserted between a conventional lock ring 1 on the wheel or tire rim 8 between said ring I and the adjacent bead cept that the pivoted end b or the web 4 or the O of, the tire carcass or casing C.' The web 4' .or the hook '1' also terminates slightly inward of the outer or tree end of the penetrating mem-' 'ber with the adjacent portion ll of said web 4 constitutinga wedge member whereby is iaciiitated the desired separation or the adjacent bead [or the tire casingor carcass C from the ring I which might otherwise be tightly held together as a result of rust olundue heating ottherubberwithin the carcass orcasingC.

Figure 2 is a fragmentary view in topplan oi the base membe'roi the. device as herein emunspoiled;

Figure 4. is a vertical sectional viewitahon Arranged within the i pper portion-of the base member I is a platfornr' flfiherein' disclosed as comprising four flat arms radiating from a com-- mon center with certain oi meshes-u having their inner end portions welded, as at. I2,Iorother wise rigidly secured to the-central portion of an elongated. flat arm ll of a-le'ngth equal to the internai diameter of the base member I. Theouter extremities of thes'earms if and II are'welded, *asat II, to the inner: face oilthe base member I, whereby the platform is rigidly mounted within '1 the base member I.- The central arm ll has depending therefrom flange it of a diameter substantially equal to the width of the plate l4, and this flange l6 has contact with the upper end of a tubular support l1,

' is set forth in Figure of the drawings.

and-is welded, as at I8, or otherwise firmly secured thereto. This support I! is of a length to have its lower end coplanar with the lower edge of the base member I and this support I! serves to resist pressure imposed upon the arms H and I4 when the device is in use, it being understood that the base member I and support ll will be resting upon a suitable supporting foundation. The outer end portions of the arms II and I4 carry the upstanding tubular members I! open at both ends, and, as herein comprised, having their upper ends substantially coplanar.v These memwise firmly secured to the outer end portions of l the arms 23 and 24 of an upper platform B. The arms 23 have their inner ends welded, as at 25, to the central portion of the elongated arm 24. The arms 23 and 24 are flat with the arms 23 in right angular relation to the arm 24. The arms 23 and 24 are of such lengths as to have their outer ends closely approach the tread portion 26 of the rim 8 from which it is desired to remove an applied tire casing or carcass C.

The central portion of the arm 24 is provided with a'depending annularflange 21 of a diameter substantially equal to the width of the arm 24. This annular flange 21 is adapted to be engaged by the head 28 carried by the outer end portion of the plunger 28 of a jack 30 positioned upon the central portion of the platform P. The jack 30 may be hydraulic or of any other type desired.

The outer end portions of the arms 23 and 24 each have mounted thereon a rim stopper and support 3|. This stopper and support 3!, as herein disclosed, constitutes a flat plate having its rear marginal portions provided with the upstanding strengthening flanges 32 which terminate a desired distance inwardly of the outer end of the plate, whereby is provided a lip 33 to engage below the tread 26 of the rim member 8.

The central portion of the plate 3] is provided with the longitudinally disposed slot 34 through which are directed the holding bolts 35 which are also directed through the adjacent portion of an arm 23 or 24, whereby means are provided for holding the plate 31 in selected readily adjusted positions, as may be required in accordance with the size of the rim 8. The bolts 35 have coacting therewith the usual holding nuts 36.

In practice, when it is desired to remove a tire casing or carcass C from its rim 8, the said assembled rim 8 and casing or carcass C is placed upon the upper platform 13, as illustrated in Figure 4, with the penetrating members 6 extending between the lock ring I and the adjacent head 9 of the carcass C. Upon operating the jack 30 the rim 8 will be forced upwardly in a manner-to assure separation of the lock ring 1 from the ad iacent bead '9 of the carcass C, and more particularly when said ring 1 and adjacent head 9 are tightly held together by rust or as a result of undue heating of the head 9. After this separation of the ring I, said ring 1 is removed and the rim 8 and applied carcass C are again placed upon the upper platform B, but in a position reverse to that as illustrated in Figure 4, and as The jack 3!] is then operated to press the rim 8 outwardly and out from within the casing or carcass C.

When the device as herein disclosed is employed in' connection with a wheel wherein the rim forms a part of the wheel structure, the rim stoppers and supports 3| are removed, and there is bolted to the central portion of the arm 24, by the bolts 31, a plate 38. The central part of the arm 24 is provided with the suitably positioned openings 39 to allow for the placing of this plate 38 when it is desired to use the same. This plate is provided with an upstanding flange 40, and to the opposite sides of which are arranged the centering plates 4| Each of these plates 4| is provided with a slot 42 disposed lengthwise thereof, with the slot 42 of one plate 4| being in register with the slot 42 of the second plate 4i. The flange 40 has disposed therethrough the headed shanks 43 and 44 which are also directed through the slots 42 of the plates 4|. The shank 43 has disposed theredirough a holding pin 45, while the shank 44 has threaded thereon a clamping nut 46 whereby the plates 4! are held in desired selective adjustment, dependent upon the diameter of'the wheel hub. These plates 4i engage within the hub of the wheel to facilitate the operation of removing the tire carcass from the rim carried by the wheel. In this operation the upper platform B, or more particularly the arms 23 and 24 thereof, have contact with the spokes of the wheel. Y

Each of the tire hooks T has welded to the opposite faces of its web 4 reinforcing strips 41 which extend from the pivoted extremity of said web to a point closely adjacent to the penetrating member 6 at the opposite extremity thereof.

From the foregoing description-it is thought to be obvious that a tire removing device constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated.

I claim:

A device for removing a tire carcass from a rim including a tubular base, a platform arranged within and carried by the base at the upper portion thereof, a support depending from the central portion of the platform and having its lower end substantially-co-planar with the lower end of the base, upstanding guide members carried by the platform adjacent to the baseand spaced supporting plates carried by the second platform at spaced points thereon for adjustment radially of said second platform, each of said plates havmg a slot, and means for holding each' of the plates to the second platform in selected radial adjustment.

LAWRENCE LARSON. 

